Those are just rebased patches by Leonard Crestez that @martin.kepplinger pointed me once to with a small fix to make them actually work. I'm running them on my phones for a long time now. Just putting it out there for visibility.
To make use of it, you need to switch the governor to simple_ondemand, for instance by putting this into /etc/udev/rules.d/86-librem5-devfreq.rules:
ACTION=="add", SUBSYSTEM=="devfreq", TEST=="governor", ATTR{governor}="simple_ondemand"Related: #188